Trans,Trans-2,4-Heptadienal

Product Name:

trans,trans-2,4-Heptadienal

Synonyms:

2,4-Heptadienal technical grade, 90%;trans,trans-2,4-Heptadiel;4-Heptadienal,(E,E)-2;Hepta-2(E),4(E)-dienal;T2 T4 HEPTADIENAL;2,4-HEPTADIEN-1-AL;2,4-HEPTADIENAL;FEMA 3164

CAS:

4313-03-5

MF:

C7H10O

MW:

110.15

EINECS:

224-328-0

Product Categories:

API intermediates;aldehyde Flavor;Aldehydes;C7;Carbonyl Compounds;C7Volatiles/ Semivolatiles;E-L;Alpha Sort

Mol File:

4313-03-5.mol

Melting point 

84.5 °C

Boiling point 

84-84.5 °C(lit.)

density 

0.881 g/mL at 25 °C(lit.)

FEMA 

3164 | (2E,4E)-HEPTADIENAL

refractive index 

n20/D 1.534(lit.)

Fp 

150 °F

storage temp. 

Refrigerator (+4°C)

Water Solubility 

INSOLUBLE

JECFA Number

1179

BRN 

1699244

CAS DataBase Reference

4313-03-5(CAS DataBase Reference)

NIST Chemistry Reference

2,4-Heptadienal, (E,E)-(4313-03-5)

EPA Substance Registry System

2,4-Heptadienal, (2E,4E)- (4313-03-5)

Hazard Codes 

T,Xi

Risk Statements 

22-24-38

Safety Statements 

36/37-45

RIDADR 

UN 2810 6.1/PG 3

WGK Germany 

3

F 

10-23

Hazard Note 

Irritant

HazardClass 

6.1

PackingGroup 

III

HS Code 

29121900

Description

2,4-Heptadienal retards or prevents the development of "off-flavors" in auto-oxidizing fats and oils. May be prepared by reduction with LiAlH4 of the dienoic acid prepared by the Doebner synthesis, followed by oxidation with Mn02 of the resulting dienol to the corresponding dienol; by the method of Marshall and Whiting.

Chemical Properties

2,4-Heptadienal has a fatty, green odor In auto-oxidizing fats and oils, it retards or prevents the development of “off-favors ”.

Chemical Properties

clear yellow liquid

Chemical Synthesis

By reduction with LiAlH4 of the dienoic acid prepared by the Doebner synthesis, followed by oxidation with MnO2 of the resulting dienol to the corresponding dienol; by the method of Marshall and Whiting.